New fields, improved response handling, and a deprecation

Key Changes

• Response handling: Added NOT_FOUND status and new statusCode field in responses.

• Data model updates:

  • Product: new bundleItems, materials (array), specialFeatures; deprecated material.
  • Deal: new parentAsin.
  • Stats: new buyBoxSavingBasis.
  • APlusModule: new imageAltText and asin.
  • VariationObject: new image.

Migration Notes

• Update enum handling to cover NOT_FOUND.
• Prefer materials over material.
• Use statusCode for better error handling.
• Integrate new fields where applicable (bundles, special features, buy box pricing, A+ content).